ruby
a=[1,2].each_with_index.max[1]
# =>1
a=[1,2].each_with_index.min[1]
# =>0
1番から始めたい場合
ruby
a=[1,2].each_with_index.max[1]+1
# =>2
a=[1,2].each_with_index.min[1]+1
=>1
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Ruby最大値(max)と最小値(min)の位置インデックス(index)を得る方法
Last updated at Posted at 2018-11-05
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